Illinois State University

Olympia Surgical Suites

Peoples Gas

Portillos

Presence (Provena Covenant) Medical Facility

Starbucks

University Towers

Wolfram Research

Who We Are

Reliable Plumbing & Heating--better known as Reliable Mechanical throughout central Illinois--has provided heating, air conditioning, plumbing, refrigeration, and a variety of other services to both residential and commercial customers for more than 100 years.